JUNE 12, 2021

This event is about staying active and enjoying the great outdoors. With routes spanning 25, 50 and 100 miles, you don’t have to be a pro gravel cyclist to participate.

This year, we’re making registration easy – all we request is a free will donation as your entry fee! A basic donation of $5 will help to cover processing fees. Additional contributions from ten dollars to ten hundred will help to support Imagine Grinnell’s nonprofit initiatives including financial assistance for the JPK Fund, a local mental health consortium.

Everyone who enters receives a free, quality mask with x-frame for comfortable breathing. We will be practicing social distancing and protocols throughout this event with the goal to maintain the health and safety of all our riders!

As with most current events, we reserve the right to cancel. But we’re not planning on it! Be sure to follow us on Facebook and Instagram for event updates – we’ll email important info as well.


In its inaugural year, the Prairie Burn 100 had a great turnout of 161 riders from eight states! To see pictures and a course map from the event, click the links below.​​




  1. Even though this is a laid-back event: YOU ARE RESPONSIBLE FOR YOU. We will have very limited ability to bail you out if you have a bad experience out on the roads. Know how to fix a flat or at least ride with someone who does. Have a cell phone and a bail-out plan if your ride goes up in smoke.​

  2. Don't be a jerk. Be respectful to your fellow cyclists, the residents of Grinnell and the members of the rural community. Make everyone glad that you are here. 

  3. ​Obey all traffic laws. 100% of the course will be open to vehicle traffic so don't become a hood ornament.​

  4. Stay to right hand side of the road at all times, especially when cresting a hill. Again, don't become a hood ornament. 

  5. ​Each participant is considered to be on a private excursion and remains solely responsible for any accidents in which they might be involved. The event organizers accept no responsibility for participants becoming lost, injured or worse. 

  6. ​Do not litter. 

  7. We will use the honor system to recognize who successfully finished each loop following the prescribed route. If you must leave the route for any reason, then return to the route where you left off, or let the event organizers know that you are bailing. This is for your safety and for the integrity of the ride. 

  8. This is a self-supported ride. Once the cyclists leave Grinnell, no outside support from friends or spectators is allowed. This is for the safety of the participants and spectators as we want minimize vehicle traffic on the course. If a participant needs to quit while out on the course, they may have their support person come and get them. Please contact the event organizer if this is the case so that we don't have to come look for you. 

  9. E-bikes are welcome! Just remember that this isn't a race and be ready in case of battery malfunction. 

  10. There are no official cut-off times for the 25 mile or 50 mile loops but all cyclists must be in by 7:00 PM (9.1 MPH average for those doing the full 100 miles).  This is so that we don't have to come looking for you and so you don't miss out on the live music. 

  11. Cue cards and GPX files will be provided for navigation. Use both so you don't get lost out there. 



Welcome to the Jewel of the Prairie.

© 2021 Prairie Burn 100 & Imagine Grinnell  |  For questions, contact us at info@prairieburn100.com

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